Apparatus for treating pipes, bars, etc



July 9, 1929. POTTHQFF 1,720,525

APPARATUSFOR TREATING PIPES, BARS, ETC

Original Filed April 18, 1925 INVENTOR i f 77 4; ATTORNEY;

Patented July 9, 1929'.

UNITED STATES PAT ENT OFFICE.

KURT THEODORE POTTHOFF, OF BROOKLYN, YORK, ASSIGNOR TO U. S. GALVANIZ-ING & PLATING EQUIPMENT CORPORATION, A CORPORATION OF NEW YORK.

APPARATUS FOR TREATING PIPES, BARS, ETC.

Original application filed April 18, 1925, Serial No. 24,053. Dividedand this application filed December 6, 1927. Serial No. 238,004.

This invention relates to an apparatus for cleaning and picklingarticles and particle larly to the cleaning and pickling of a tubulararticle such as a pipe.

,The object of. the invention is to provide an apparatus. which willautomatically prepare the pipes for coating. passing the p pes throughthe operation so that uncoated pipes are received at one end of theapparatus and are delivered cleaned and pickled at the other end. i y ei Further objects of the invention will appear from the followingdescription taken in connection with the accompanying draw-v ings, inwhich Fig. 1 is a sectional elevation of an apparatus adapted to carryout the invention. Fig. 2 is a plan view of an apparatus shown in Fi 1.v

and 4 are sectional views illustrat ing the alternative methods ofconveying and tipping the pipe. c

The pipes to be treated are delivered from a rinsing tank; whichremoveshall cleaning liquid and rolled down incline 36 into a treatingliquid 37 such as an acid both forp1 ckling t-he pipes by chemicalaction remov ng scale and renewing the surfaces ofthe p1pe preparatoryto receiving a coating material. I have found it important to make theaction of such a solution even and thorough particu larly within thepipe. To attain this the solution within the pipe is constantly renewedso as not to become weakened and irregular in its action. Each pipeonrolling down incline 36 and. semicircular tracks 38 is received by thearms 39 of spiders 40, these spiders being angularly offset as shown sothat (viewed in endwise projection Fig. 1) the arms 39 atone end ofthepipe are out of register with the arms at the other end. As the pipepasses down into the liquid one end of the pipe is thus higher than theother and the liquid will naturally tend to circulate thoroughly in theinterior of the pipe distimes.

a natural circulation and the renewal of the solution and the removal ofany accumulated air bubbles. The raised end of the pipe will pass out ofthe liquid 37 and the interior liquid will of course flow down towardthe lower end and the entire pipe in inclined posltion \villbe raisedout of the liquid so as to drain off the solution from the interior ofthe ipe. The pipe thus inclined is passed on to tie correspondinglyinclined support 41 across which it rolls to the semicircular tracks 42where it is received by the arms 43 of spiders 44. These spiders 44 areoffset with relation to each otherin a direction opposite to the offsetof the spiders 40 so that the inclination of the ipe at the entranceportion of the tracks 42 is opposite to the inclination at the entranceportion of tracks 38. The pipe is thus carried down along the tracks 42with its near end (Fig. 1) below the other end with the sameadvantageous natural circulation of the pickling liquid. Similarly atthe bottom of tracks 42 the following arms 43 pick up the P1138 andgradually reverse its inclination and carry it in inclined position upthe discharge portion of tracks 42 draining it in a direction oppositeto the previous draining and delivering the pipe to the inclined support45 where itis deposited with its near end (Fig. 1) highlifting it inoppositely inclined positions are repeated in the tank 47 to subject thepipe to the action of the solution a desired number of In the apparatusshown there are six of these units. V

Fig. 3 i is a sectional view showing the tipping of the pipe by theoffset of therotatable conveyor arms on opposite sides with relation toeach other, and Fig. 4 is a similar section showing the pipe tipped byhaving one of the conveyor tracks t" at a higher level than the other,the conveyor arms in such case not necessarily being offset withrelation to each other. It is obvious that still other means may beemployed to give inclination to the pipe as it is passing through theliquid.

The raw pipes received in at one'endoff the apparatus are thus cleanedand pickled on the inside and outside and delivered in perfeet cleanedand pickled condition at the disonly necessary to correspondinglychangethe apparatus and for articles which will not roll to. arrange'thepositive feeds to pass the articles from one feed to the other insteadof interposing an inclined draining portion between the feeds as shown.Itis obvious that one or more of the operations may be omitted where notdesired or required and that various modifications of the apparatus maybe resorted to Within the scope of the invention and without departingfrom the novel combination set'forth in the appended claims.

This'application is a division ofapplicants copending application SerialNo.

24,053 filedApril 18, 1925, for method and appar'atus'for treatingpipes, bars, etc.

I claim: 1. In apparatus for treating tubular articles, the combinationwith a tank adapted to contain liquid, of means for feeding the articlesthrough said tank and renewing the liquid within the interior of thearticle in alternate opposite directions during its progress throughsaid tank. 2; In'apparatus for treating tubular articles,the'combination with a tank adapted 4 to contain liquid, of means forfeeding the articles through said tank and repeatedly renewing theliquid within the-interior of the article in alternate oppositedirections during its progress through said tank.

3. In apparatus for treating tubular articles, the combination with atank; adapted to contain liquid, of means for feeding the articlesthrough said tank and renewing the liquid within the interior of thearticle I during its progress through said tank by inclining the articlein alternate opposite directions.

4. In'apparatus for treating tubular articles, the combination with at'ank.adapted to contain liquid, of means for feeding the articlesthrough said tank and renewing the liquid 'within the interior of thearticle during its progress through said tank by inclining the articleat changing inclinations.

5. In apparatus for treating tubular articles, the combination with atank adapted to contain liquid, ofineans for feeding the articlesthrough said tankan'd renewing the liquid within the interior of thearticle during its progress through said tank by incliningthe article atchanging inclinations in opposite directions. I I r 6. In "apparatus fortreating tubular articles, the combination with a' tank adapted tocontain liquid, of means for feedingthe articles through said tank andrenewing the liquid within the interior of the article during itsprogressthrough said tank by lifting the end of the article above thesurface of the liquid.

7. In apparatus for treating tubular articles, the combination with atank adapted to contain liquid, of means for feeding the articlesthrough said tank and renewing the liquid within the interior of thearticle during its rogress through said tank including means or liftingthe end of the article above the surface of the liquid and then liftingthe entire article above the surface of the liquid and thenre-submerging the article in the liquid.

8. In apparatus for treating tubular articles, the combination with atank adapted to contain liquid, of means for feeding the articlesthrough said tankand renewing the liquid within the interior of thearticle during its progress through said tank including means forlifting the end of the article above the surface of,the liquid and thenlifting the entire article above the surface of the liquid and thenre-submerging the article in the liquid in inclined position.

9. In apparatus for treating tubular articles, the combination with atank adapted to contain liquid, of means for feeding the articlesthrough said tank and renewing the liquid within the interior of thearticle during its progress through said tank including means forlifting the end of the article above the surface of the liquid and thenlifting the entire article above the surface of the liquid and thenre-submerging the article in the liquid in inclined position andrepeating the process with opposite inclination of the article.

10. In apparatus for treating tubular articles, the combination wit-h atank adapted to contain liquid, ofmeans for feeding the articles throughsaid tank and renewing the liquid within the interior of the articleduring its progress through said tank including means for lifting theend of the article above the surface of the liquid and then lifting theentire article above the surface of the liquid and then re-submergingthe article in the liquid in inclined position, and repeating theprocess with alternating oppositeinclinations of the article.

11. Inapparatus for treating pipes, bars and the like, the combinationwith a tank adapted to contain liquid, of means for feeding-the articlethrough said tank including means forsupporting it in an inclinedposition while passing through a part of said tank and in a reverselyinclined position while passing through another portion of the tank.

12. In apparatus for treating pipes, bars and the like, the combinationwith a tank adapted to contain a liquid, of means for conveying thearticle through the tank and supporting the article inclined in onedirec tion at one portion of the tank and inclined in the oppositedirection at another portion of the tank.

13. In apparatus for treating pipes. bars and the like, the combinationwith a tank adapted to contain liquid, of means for feeding the articlethrough said tank and supporting it at diti'ereut intervals inoppositely inclined positions \vhile passing through said tank, saidmeans being adapted to raise one end of the article above the surface ofthe liquid at a portion of the tank.

14. In apparatus for treating pipes, bars and the like, the combinationwith a tank adapted to contain a liquid, of means for conveying thearticle through the tank and supporting the article inclined in onedirection at one portion of the tank and inclined in the oppositedirection at another portion of the tank, said means being adapted toraise each end of the article above the liquid during a portion of itstravel.

15. In apparatus for treating pipes, bars and the like, thecon'ibination with a tank adapted to contain a liquid, of means forconveying the articles through said tank and comprising means foralternately inclining' the articles in opposite directions during theirtravel through said tank.

16. In apparatus for treating pipes, bars and the like, the combinationwith a tank adapted to contain a liquid, of means for conveying thearticles through saidv tank and comprising means for alternatelyinclining the articles in opposite directions during their travelthrough said tank, and alternately raising opposite ends of the articlesabove the surface of the liquid in said tank.

KURT THEODORE POTTHOFF.

